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-rw-r--r--src/mesa/state_tracker/st_atom_shader.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/src/mesa/state_tracker/st_atom_shader.c b/src/mesa/state_tracker/st_atom_shader.c
index 1ed9333556e..91969185093 100644
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -226,9 +226,11 @@ find_translated_vp(struct st_context *st,
GLint fpInAttrib = vp_out_to_fp_in(outAttr);
if (fpInAttrib >= 0) {
GLuint fpInSlot = stfp->input_to_slot[fpInAttrib];
- GLuint vpOutSlot = stfp->fs->state.input_map[fpInSlot];
- xvp->output_to_slot[outAttr] = vpOutSlot;
- numVpOuts++;
+ if (fpInSlot != ~0) {
+ GLuint vpOutSlot = stfp->fs->state.input_map[fpInSlot];
+ xvp->output_to_slot[outAttr] = vpOutSlot;
+ numVpOuts++;
+ }
}
else if (outAttr == VERT_RESULT_PSIZ ||
outAttr == VERT_RESULT_BFC0 ||
@@ -247,7 +249,7 @@ find_translated_vp(struct st_context *st,
* We could use this info to do dead code elimination in the
* vertex program.
*/
- dummySlot = stfp->num_input_slots;
+ dummySlot = numVpOuts;
/* Map vert program outputs that aren't used to the dummy slot */
for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {